LifeSize Gateway-PRI, Руководство пользователя

Страница: 149 / 196

Using the LifeSize Gateway 141
About Dialing Out to the ISDN Network via the Gateway
Dialing Example 3: 2B video calls
The number string 821816455318* is a 2B video call from an IP network
terminal to an H.323 endpoint on another IP network or to a terminal on the
ISDN network. Both B channels have the same number. This number string
consists of:
82—The service prefix for a 2B video call.
1816455318—The destination phone number including the area
code.
*—The second number delimiter. The second number delimiter tells
the LifeSize Gateway to dial the destination phone number a second
time.
Dialing Example 4: 2B video calls
The number string 821816455318*1816455319 is a 2B video call from an IP
network terminal to an H.323 endpoint on another IP network or to a terminal on
the ISDN network. The B channels have different numbers (or your endpoint
does not have two phone number fields). This number string consists of:
82—The service prefix for a 2B video call.
1816455318—The destination phone number including the area
code.
*—The second number delimiter.
1816455319—The second B channel number including the area
code.
Dialing Example 5: 6B bonded high quality video calls
The number string 867455001 is a 6B bonded high quality video call from an IP
network terminal to an ISDN network terminal. This number string consists of:
86—The service prefix for 6B bonded calls.
7455001—The phone number of the destination terminal.
Dialing Example 6: IP-ISDN-IP direct dialing—Gateway supports TCS4
The number string 9825645000^3333 is a call from an IP network endpoint
(Endpoint 1) to an IP network endpoint in another zone (Endpoint 2), through a
public ISDN network, as shown in
Figure 4-1 . Gateway A dials using TCS4,
while Gateway B is set to receive calls in TCS4 mode.